| The aerial parts of Pedicularis sibthorpii and P. wilhelmsiana were collected from the East
Azerbaijan province, Iran, and their volatile oils were analyzed by GC-FID and GC-MS. While 19 components,
representing 89.8 % of the total oil, were identified from the volatile oil of P. sibthorpii, the identity of 36
components, constituting 81.5 % of the total oil, was confirmed from that of P. wilhelmsiana. 1-Octen-3-ol
(55.2 %), linalool (5.5 %), E-2-hexenal (4.4 %), Z-3-hexenol (4.4 %) and 3-octanol (2.7 %) were found to be
the major components of the volatile oil of P. sibthorpii. The volatile oil of P. wilhelmsiana mainly contained
docosane (29.2 %), hexacosane (4.9 %), carvacrol (4.6 %), 1-octen-3-ol (4.5 %) and heptacosane (4.3 %). |